80960CF-40(2002) 查看數據表（PDF） - Intel

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80960CF-40
(Rev.:2002)

32-Bit High-Performance Superscalar Embedded Microprocessor

Intel 

80960-40, -33, -25

Figure 4. 80960CF PQFP Pinout—Top View (80960CF-33 and -25 Only)

98

50

99

49

147

148

Pin 1

196

F_CA004A

3.4

Package Thermal Specifications

The 80960CF is specified for operation when case temperature (TC) is within the range of

0 °C–100 °C for 33 and 25 MHz, and 0 °C–85 °C for 40 MHz. TC may be measured in any

environment to determine whether the 80960CF is within specified operating range. Case

temperature should be measured at the center of the top surface, opposite the pins.

Refer to Figure 5 for more information.

Ambient temperature (TA) is calculated from thermal resistance from case to ambient (θCA) using

Equation 1:

Equation 1. Calculation of Ambient Temperature (TA)

TA = TC – (P ⋅ θCA)

Table 10 shows the maximum TA allowable (without exceeding TC) at various airflows and

operating frequencies (fPCLK).

Note that TA is greatly improved by attaching fins or a heatsink to the package. Maximum power

consumption (P) is calculated by using the typical ICC as tabulated in Section 4.4, “D.C.

Specifications” on page 27 and VCC of 5 V.

22

Datasheet

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